davis



J. N. DAVIS.

BLOW GUT PATCH FOR PNEUMATIC TIRES.

APPLacATloN min AuGJ. |915.

l ,l 94,279 Patented Aug.V 8, 1916. f

2 SHEETS-SHEET l.

712257Z@ EaZ/emr;

J. N. DAVIS..

BLOW OUT PATCH FOR PNEMATIC TIRES.

APPLICATION FILED AuG.16. 1915.

1 1 94,279. Patented Aug. 8, v1916.

2 SHEETS-SHEET 2.

m immv mw UNITED STATES PATENT FFICE.

:JASPER N. vDAVIS, 0F DENVER, COLORADO.

BLOW-OUT PATCH FOR PNEUMATIC TIRES.

Specification of Lettersatent.

Patented Aug. s', 191e.

Application filed August 16, 1915. Serial No. 45,8!6.

To all whom 'it muy concern.: A

Be it known that I, JASPER N. DAVIS, a citizen of the United States ofAmerica, re-

`siding inthe city and county of Denver and State ot. Colorado, haveinvented a new and useful Blow-Out Patch for Pneumatic Fires, f

rubber protected blow out'patch 'of this chal- Y acter which will resistthe usuali wearto which such patches are subjected and in' which thelife and V eflic-iency of the said blow out patch a rc=maintained. Theseobjects are accomplished by the forni of patch illustrated in theaccompanying drawings` in which:

Figure l, isla transverse sectional view through an automobile tire andrini provided with my' in'iprovcd inside blow out patch. Fig. 2, is avertical longitudinal sectional View through the blow out patch, theinner fold or lapof thesauie-being broken away to show one* forni ofbracing means therefor. Fig. 3, is a diagrammatic view showing themanner of folding thc nn-.tcrial of 'which the patch is formed. .Fig.41, is a front vic-w of alin-k of one of the chunks-which 'is attachedto the truss bars as shown in Fig. 2, to prevent bulging ot the patchunder pressure from the inncr tube. Fig. 5, is a lierspcctive View ofone of the'scctions which make up the jointed arches at cach end of thepatch. Fig. G, is a fragmental sectional View, and 1llustrates a taperedsoft rubber extension which is preferablyv sccurcd'upon each end ofthe'patch. Fig. 7, is a side elevation of a blow out patch, partlybroken away, and illustratingr a modification in which the chains aredispensedl with, a plurality of wires or cables or-a continuous wire orcable being employed for preventing bulging of the patch due to internalpressure. Fig.' 8, is a transverseV sectional view of Fig. 7. Fig. 9,-isa vertical scr-.tional view of -oneof the truss bars showing the wireholdingr tongue.

'tongues before being bent ont.

` mobile or other rehu` '5 is the rubber cover prete' patch, and 6. i'and are the folds -or laps bent out to receivejthc looped end of thewireor cable. Fig. Y), showing the tongue pressed in as in And Fig. 11,is a sideview of a portion of one of the truss bars,

Shuiiar lai-.parts throughout the-several v'iewsfin the Aaccompanyingdrawings.

.Referring to the drawings-the mimeral4 Fig'. 10, .is a View similarto.

(sov

show-'ing the Y letters and nux'nerals refer to simil, Fig. l, indicatesthetirc rim of anautoin which the. `bead ot a tire is held, l"cifra-rtread of the tire, 4 1s the fabric. or body portion of :i tire,

constituting the body portion of the same.`

The numeral refers to a seriesof inter. locking blocks, forming van archinthe ends of the body portion of the patch.v These blocks may be madeof any suitable'hard ma# terial, the blocks being so vcurved that eachA'fo ing my blow out arch conforms to. the interifncnrvature of thetire. The arches formed by these'blocks 2 serve as hold downstotrus's'bars 9' which rest in the longitudinal ends' ofthe patch.These'arches rest upon the end portions of the said trussbars, shown inFig. 2.

One of. the disadnintages of the present construction `ot" inside blowout patches in present use is, that theair pressure' from the .innerltube against thev patch cause-sit to bulge to a certain ext-ent at theweakened l0r blown out place in the casing .under which the patchis-placed; )ne of the objects in my present construction is vtoeliminate this disadvantage, and thisis accomplished by means of anysuitable form of chain or flexible wire, cables, orv strong cords,chains 10 being'shown in Fig. 2, and aWire or. wires 11 in Fig. 7, whichare fastened to truss bars 9 by means of eye holes l2, Fig, 2, orproject-ing hoolc. 13, Fig. 7.' It'can be' readily seen and understoodthat therecanbe no bulging out of a blowfout .patch-'con- Stllcvd inthis manner.'

'lhc truss bars flare held down to the rilu and vin'place in the bendsof the fabric by means of thejointc-d ficxible arc-hes 2. The

, material such as wire gauze, wire stranded f there is no stretching ofthe flexible chains or cables 10 or 11 as the case may be. The cables orcords 11 shown in Fig. 7 inay be either one continuous lace orindependent endless loops each one being separate from the other. Iprefer the latter construction because if one of the loops is broken bya bruise. the other will remain intact. The projecting hooks 13 arepreferably cut and pressed out of the metal trusses 9 and are ovalshaped, which prevents cutting ot the cablesor cords. Fig. 11illustrates a portion of one of the truss bars 9, showing circularshaped apertures` 1l in the bar, which release the tongues 13, which areatterward pressed outward to the shape shown in Figs. 7 and 9, givingthem the form ot the usual lace hooks on a inans shoe, and which prcvents the cutting `of the flexible cables or cords. 'hen the cables areplaced undcr the hooks as shown in Fig. t), the hooks are pressed inwardas seen inV Fig. 10, which secures the cables in place, and also reducesthe combined width of the cable and bar as can be seen by comparing thetwo Figs. .i and 10.

lin Fig. 8 is shown a section through the blow out patch and through thebars 9 and the-.hooks 13, giving the relative positions ot' the saidbars 9, and the cables 11 in the tlexible member of the patch, whichinay be ot cables or fabric cloth. ln thc larger sl .ed patches whereinore strength is required. eX-

tra layers of l'ibric or other niaterial oft which the patch is made,may be put etherf on the outside or inside or both as desired` In Fig. 8an extra layer 15 is shown on the inside, the longitudinal edges otwhich niav be extended to come together as seen at l1" or one mayoverlap the other. The side braces 9, Fig. 8, are shown resting in theshort bend ot' the laps 6 and S, and one side of the endless cable, orone lap ot' a continuous lace of a cable or one length ot a chain form10, as seen in Fig. 2. is seen hooked into truss bar 9, Fig. S, andcoming in bctween the layers ot' flexible, fabric material 6 and S, alsobetween the saine layers and 8 are the arch bracing blocks Q, Fig. 1.The layers ol material t3, 7 and 8 are folded of one continuous piece asshown in Fig. 3; however the said layers could be each a separate pieceand the truss bar t) riveted or otherwise secured to thein` but as thiswould be bulky and require eXtra expense in nianufacturing. l preferfolding the three layers vall from one piece as shown.

The folded fabric should be of a thickness commensurate with the sizeand strength ot' blow out patch required, with the additional layer 15,Fig: H. if needed.

In the extrry heavy and stronger blow out patches for extra heavypleasure or coiiiniei'-- cial vehicles, extra anchors such as books thepresent tinie. .ellicient and superior inside blow out patch 17, Fig. 2,may be needed and these may be designed to anchor into the bead of thetire or under the inner point of the tire or outer casing bead.

In Fig. 5 is shown one of the blocks which make up the bracing archpreviously de scribed and-these blocks may be made of any designdesired. They may also be perforated in lany foi-in to reduce weight andstill alord the required strength. These blocks 2 as seen in Fig. 1,have concave and convex bearing edges by which they are held in place byeach other, this arrangement giving a permanent bearing end surfaceatall times when the tire is run soft or is pressed inward by stones orother objects run over by the tire.

In Figs. 1, 2 and 8 the tread of the blow out patch is protected withrubber vulcani'Aed thereon which protects thepatch from wear of the roadbed and also troni having a hole pinched through it by a separated orchated inner fabric of the outer casing. l prel'er extending the rubbertread to each end ot' the patch, terminating it beyond the ends of thepatch into a very Soft extension 19, Fig. G, to protect the inner tubetroni pinching at the ends ot the blow out patch.

The blow out patch herein described and claimed is self adjusting` seit'depending and rubber protected, and one which has greater self strengthand longer wear than an)v other known to ine on the nia-i'ltet at lt isnot only a inore than those in present use. but it will not be necessarywith this patch to useI any st vle, ot'iuit side lace" or `"lioolt onblow out patches." lt inay be called a detachable section because otlits seli' contained .strength and rubber protected tread.

llaving described iny invention. what l. claiin as new and desire tosecure by lietA ters latent. is:

I. ln a blow out patch tor pneumatic tires. a piece. of suitableflexible inaterial folded upon itself to forni three laps ol'substantially equal length, truss bars which rest in the portions wherethe. two bends occur, and flexible iiieans which are secured to thetruss bars and extend around between the laps of the patch to preventbulging ot' the saine under expansion.

2. In a blow out patch for pneumatic, tires. a piece ot' suitableflexible inaterial folded upon itself to forni Vthree laps of equallength, the middle lap terminating within the beiid formed by the twoother laps. the whole being given a, U-shaped curve, truss barswhichvrest in the portions where the two bends occur, tlexible meanswhich are secured to the truss bars and cxteud around between the lapsot` the atch to prevent bulging of the saine under expansive pressure,and means for holding o'll said truss bars against the outward pulls`exerted by the said flexible means.

3. In a blow out patch for pneumatic tires, a piece of suitable flexiblematerial folded upon itself to form three laps of substantially equallength. truss bars which rest in the portions where the two bends occur,means for holding the said truss bars against outward pull when thepatch is under expansion pressure and hooks for preventing creeping ofthe patch within the tire.

4. The combination with a pneumatic tire comprising inner and outertubes, of a patch interposed between the said tubes, the longitudinaledges of which terminate at the terminal edges of the said outer tube.truss bars in the longitudinal edges of said patch, and means extendingaround the end portions of said patch and engaging the end portions ofthe said truss bars, to hold them against outward pull due to expansionpressure.

The coinltiination with a pneumatic tire con'iprising inne and outertubes, of a patch interposed between the said tubes, the longitudinaledges of which extend parallel with the terminal edges 0f the said outertube, truss hars in the longitudinal edges of the said patch. meansconnected with the said truss bars and extending around the patch toprevent bulging of the same under cxpansifzin seare, and meansextendingr around the ends of the patch and engaging the ends of thetruss bars, for holding them against outward pull exerted by the meansfor preventing bulgingrs.

(S. The combination with a pneumatic tire, comprising;r inner and outertubes, of a patch ot suitable llexible material interposed between thesaid tubes, the longitudinal edges of which terminate at the terminaledges of the outer tube. the tread portion of said patch haringr arubber coating, truss bars in the longitudinal edges of the said patch.flexible connections extendingY around through the patch and attached tothe said truss bars. and jointed arch members extending around throughthe Iendsof the patch and resting' on said truss bars.

T. The combination with a pneumatic tire cornirisin;r inner and outertubes, of' a patch interposed bctuian said tubes consistingr of a pieceof suitable flexible material folded upon itself lo l'orui three laps. acoating ol' rubber uiranizcd upon the tread portion ol' said patch. iuse bars rrr-,ling in the looped edges' of said patch. le-Mdcconnections exlrudinpr around between the laps of the patch andconnected to the said truss bars. and jointed zr' h membro-f eitendingaround the o1 patch between the laps club. tin' tlareol'. iheii endsrrsllnp upon the ends of the said t Hiss liars.

8. The combination with a pneumatic tire comprising inner and outertubes of a U- shaped patch comprising a piece of suitable flexiblematerial folded upon itself lo forni three laps of substantially equallength, the tread portion of said patch having a coating ot' rubbervulcanized thereon. curved truss bars which rest in the folded edges ofsaid patch, flexible connections which extend around between the laps ofthe patch and are connected to said truss bars.l sectional arch memberswhich extend around the ends of the patch between the laps thereof, theterminal members of which rest upon the ends of said truss bars, and areinforcing strip which extends around the interior of the patch.

9. A blow out patch for pneumatic tires having a rubber coating upon itstread portion. truss bars in its longitudinal edges, flexibleanti-bulging means extending around through said patch and secured tosaid truss bars, and bracingr means extending around through the ends ofthe patch, the terminal portions thereof resting' upon the ends ol' thesaid truss bars.

10. 'In a blow out patch for pneumatic tires, a U-shaped sheet offlexible material.y having truss bars alongr its terminal longitudinaledges. anti-bulging elements connected to said truss bars andextending,` around through said patch, and sectional bracing elementsextending around through the ends of said patch the terminal portionsthereof resting upon the ends of said bars.

ll. A blow out patch for pneumatic tires comprising r a sheet ofsuitable material fold ed upon itself to form three laps ofsubstautially equal length, the whole beine.' U shaped in cross section.truss bars in the longitudinal edges of said patch haring projections.anti-lullgin.;r elements extendingY around between the laps ol' saidpatch and connecled to said projections. and sectional bracing archesexttnding around through the ends of said patch the terminal members ofwhich rest upon the said truss bars.

l2. A blow out patch for pneumatic tires comprisingr a sheet of suitablematerial folded upon itself to form three laps of equal length. thetread portion of which has a rubber continu, truss bars in the foldededges of said patch having hooks struck out from their surfaces, wireextending around between the laps of the patch and engaging said hooks,and bracing arches extendingr around the ends of the patch between thelaps thereof comprising a plurality of metal sections the terminalmembers of which rest upon the ends of the said truss bars. theadjoining edges of said sections being :n contact.

13. A. blow out patch for pneumatic tires having curved truss bars inits longitudinal edges having hooks struck out from their surfaces,:n.wire which is passed around buck and forth in said patch. tlu` loupedpurtfiuns of which engage the said hooks,y and bracing arches in the@mls of suinl putc-l1 comprising u plurality of metal sevtions whoseadjoining edges are respectively grooved and rounded to fit one withinthe uthm', theI lurminul sevtions resting upon the ends of thc trussbars.

In lcstinmny whereof I :Llix my Signature in presence of two witnvsses.

JASPER N. DAVIS.

